| Placocarpa mexicana Hook. f., 1873 |
| Plocaniophyllon Brandegee, 1914 |
| Plocaniophyllon flavum Brandegee, 1914 |
| Pogonopus Klotzsch, 1853 |
| Pogonopus exsertus (Oerst.) Oerst., 1863 |
| Pogonopus speciosus (Jacq.) K. Schum., 1889 |
| Portlandia P. Browne, 1756 |
| Portlandia ghiesbreghtiana Baill., 1879 |
| Portlandia guatemalensis Standl., 1928 |
| Portlandia lumaeana (Baill.) Baill., 1880 |
| Portlandia mexicana (Zucc. & Mart. ex DC.) Hemsl., 1879 |
| Portlandia pterosperma S. Watson, 1889 |
| Posoqueria Aubl., 1775 |
| Posoqueria coriacea M. Martens & Galeotti, 1844 |
| Posoqueria latifolia (Rudge) Roem. & Schult., 1819 |
| Posoqueria obliquinervia Standl., 1928 |
| Posoqueria pittieri Standl., 1928 |
| Posoquerieae Delprete, 2004 |
| Pseudomiltemia Borhidi, 2004 |
| Pseudomiltemia davidsonii Mart.-Camilo & Lorence, 2011 |